fix(reporting): correct SSD life documentation and logic

- Fix misleading comment in DiskInfo struct that said "percentage of
  life used" when it's actually "percentage of life REMAINING"
- Document that 100 = healthy, 0 = end of life, -1 = unknown
- This matches the Proxmox API behavior where wearout "100 is best"

pkg/reporting/reporting.go

@@ -21,6 +21,89 @@ type MetricReportRequest struct {
 	End          time.Time
 	Format       ReportFormat
 	Title        string
+
+	// Optional enrichment data (populated by handler from monitor state)
+	Resource *ResourceInfo // Details about the resource being reported on
+	Alerts   []AlertInfo   // Active and recently resolved alerts for this resource
+	Backups  []BackupInfo  // Backup information for VMs/containers
+	Storage  []StorageInfo // Storage pools (for nodes)
+	Disks    []DiskInfo    // Physical disk health (for nodes)
+}
+
+// ResourceInfo contains details about the resource being reported on
+type ResourceInfo struct {
+	Name          string
+	DisplayName   string
+	Status        string
+	Host          string // URL for nodes
+	Node          string // Parent node for VMs/containers
+	Instance      string // Proxmox instance name
+	Uptime        int64
+	KernelVersion string
+	PVEVersion    string
+	OSName        string
+	OSVersion     string
+	IPAddresses   []string
+	CPUModel      string
+	CPUCores      int
+	CPUSockets    int
+	MemoryTotal   int64
+	DiskTotal     int64
+	LoadAverage   []float64
+	Temperature   *float64 // CPU temp if available
+	Tags          []string
+	ClusterName   string
+	IsCluster     bool
+}
+
+// AlertInfo contains alert information for the report
+type AlertInfo struct {
+	Type         string
+	Level        string // warning, critical
+	Message      string
+	Value        float64
+	Threshold    float64
+	StartTime    time.Time
+	ResolvedTime *time.Time // nil if still active
+	Acknowledged bool
+}
+
+// BackupInfo contains backup information for VMs/containers
+type BackupInfo struct {
+	Type       string // vzdump, pbs
+	Storage    string
+	Timestamp  time.Time
+	Size       int64
+	Verified   bool
+	Protected  bool
+	VolID      string
+	NextBackup *time.Time
+}
+
+// StorageInfo contains storage pool information
+type StorageInfo struct {
+	Name      string
+	Type      string // lvm, zfs, dir, nfs, etc.
+	Status    string
+	Total     int64
+	Used      int64
+	Available int64
+	UsagePerc float64
+	Content   string // images, rootdir, backup, etc.
+	ZFSHealth string // For ZFS pools
+	ZFSErrors int    // Checksum/read/write errors
+}
+
+// DiskInfo contains physical disk health information
+type DiskInfo struct {
+	Device      string
+	Model       string
+	Serial      string
+	Type        string // nvme, ssd, hdd
+	Size        int64
+	Health      string // PASSED, FAILED, UNKNOWN
+	Temperature int    // Celsius
+	WearLevel   int    // 0-100, percentage of life REMAINING (100 = healthy, 0 = end of life, -1 = unknown)
 }
 
 // Engine defines the interface for report generation.